/**
 * Created by liujinling on 2018/7/6.
 */
export default class myMath {
  static des(arg1, arg2) {
    var t1 = 0, t2 = 0, r1, r2;
    try {
      t1 = arg1.toString().split(".")[1].length
    } catch (e) {
    }
    try {
      t2 = arg2.toString().split(".")[1].length
    } catch (e) {
    }
    r1 = Number(arg1.toString().replace(".", ""))
    r2 = Number(arg2.toString().replace(".", ""))
    return (r1 / r2) * Math.pow(10, t2 - t1);
  }

  static mul(arg1, arg2) {
    var m = 0, s1 = arg1.toString(), s2 = arg2.toString();
    try {
      m += s1.split(".")[1].length
    } catch (e) {
    }
    try {
      m += s2.split(".")[1].length
    } catch (e) {
    }
    return Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m)
  }

  static add(arg1, arg2) {
    var r1, r2, m;
    try {
      r1 = arg1.toString().split(".")[1].length
    } catch (e) {
      r1 = 0
    }
    try {
      r2 = arg2.toString().split(".")[1].length
    } catch (e) {
      r2 = 0
    }
    m = Math.pow(10, Math.max(r1, r2))
    return (arg1 * m + arg2 * m) / m
  }

  static sub(arg1, arg2) {
    var r1, r2, m, n;
    try {
      r1 = arg1.toString().split(".")[1].length
    } catch (e) {
      r1 = 0
    }
    try {
      r2 = arg2.toString().split(".")[1].length
    } catch (e) {
      r2 = 0
    }
    m = Math.pow(10, Math.max(r1, r2));
    //last modify by deeka
    //动态控制精度长度
    n = (r1 >= r2) ? r1 : r2;
    return ((arg1 * m - arg2 * m) / m).toFixed(n);
  }

}
